[Day 2] Center Presentation: IRRI

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Presented by Alice Laborte (IRRI) at the CGIAR-CSI Annual Meeting 2009: Mapping Our Future. March 31 - April 4, 2009, ILRI Campus, Nairobi, Kenya

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[Day 2] Center Presentation: IRRI

  1. 1. Geography at IRRI Alice Laborte and Robert Hijmans CGIAR-CSI Meeting, 31 March – 4 April 2009, Nairobi, Kenya
  2. 2. • Data • Software • New methods
  3. 3. Data
  4. 4. http://geo.irri.org GADM version 1 120000 190,000 units 100000 80000 # polygons 60000 40000 20000 With help from: CIAT, ICRISAT, ILRI, … 0 0 1 2 3 4 5 Level
  5. 5. GADM
  6. 6. Next step: Open-boundaries • On-line fuzzy matching of names and polygons • On-line editing of names and polygons • Time series • Linked to databases of geographic names
  7. 7. WorldClim http://www.worldclim.org Working on version 2 • Many more weather stations • More variables • Improved interpolation • Climate change scenarios • ETA (beta): January 2010
  8. 8. WorldWeather • Daily weather data for 1997—present • Min/max temperature, rainfall, radiation, humidity • 10 - 30 km resolution • Satellite data, ground stations, interpolation Daily rainfall 0 1 – 10 11 – 25 26 – 50 51 – 100 > 100
  9. 9. Crop genetic resources collecting localities http://www.biogeomancer.org/ USDA CGIAR EURISCO 212,000 341,000 79,000
  10. 10. Software
  11. 11. R software • Integrates statistics, graphics, databases, geospatial, … • Open source, easy to contribute to (‘packages’) • Command line, sometimes complicated • Scripts – can be automated, repeatable, verifiable
  12. 12. IRRI R packages http://r-forge.r-project.org/ Raster • All raster operations (overlay, neighborhood, projection, ….) • Handles very large databases RemoteSensing • Radiometric calibration • Vegetation indices • Modis, Landsat gDistance • Advanced distance measures (e.g. resistance distance) • Sparse matrix based geodata • Download: gadm, srtm, worldclim, … cropsim • Crop and disease simulation models
  13. 13. DIVA-GIS • A very popular, free and easy-to-use GIS • New version in May/June http://www.diva-gis.org • Integration with R
  14. 14. Methods
  15. 15. MODIS crop area and yield Point2 1.0 NDVI 0.8 EVI Flooding and LSWI transplanting 0.6 VALUE China 0.4 0.2 0.0 1 11 21 31 41 -0.2 DOY / 8
  16. 16. Random Forest for land use change Biophysical variables Socio-economic variables
  17. 17. Potential areas Current for expansion rice areas
  18. 18. Partial dependence plots of most important Distance to major roads Flow accumulation (focal mean) variables Population density Annual rainfall
  19. 19. Forest under threat
  20. 20. Temporal price variability
  21. 21. Poverty
  22. 22. Climate change effect on poverty Yield change (+2ºC) Poverty line (US $ PPP) 0 0 5 10 15 20 25 (1000 million US $ PPP) Cost to the poor -1 t / ha -2 -3
  23. 23. http://geo.irri.org/ International Rice Research Institute

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